Incorrect behaviour of getSequenceData function on long sequences

Currently, if there is a long sequence that is stored in several chunks (for example, if a sequence is 3 millions long, then the chunks are: 0..1048576, 1048576..2097152, 2097152..3000000), then the following function:

QByteArray SQLiteSequenceDbi::getSequenceData(const U2DataId& sequenceId, const U2Region& region, U2OpStatus& os)

behaves incorrectly if the right border of the input region equals to a chunk border (for example, U2Region(6, 1048570)).
In this case the returned result contains also the next chunk (for example, 1048576..2097152).